package com.changgou.page.service.impl;

import com.alibaba.fastjson.JSON;
import com.changgou.entity.Result;
import com.changgou.goods.feign.GoodsFeign;
import com.changgou.goods.pojo.Category;
import com.changgou.goods.pojo.Sku;
import com.changgou.goods.pojo.Spu;
import com.changgou.page.service.PageService;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class PageServiceImpl implements PageService {

    @Value("${pagepath}")
    private String pagepath;

    @Autowired
    private TemplateEngine templateEngine;

    @Override
    public void generateHtml(String spuId) {
        //获取context
        Context context = new Context();
        Map<String,Object> itemData= this.getItemData(spuId);
         context.setVariables(itemData);
        //商品详情页面存储
        File dir = new File(pagepath);
        //文件夹 新建
        if (!dir.exists()){
            dir.mkdirs();
        }
        //定义输出流
        File file = new File(dir+"/"+spuId+".html");
        Writer out = null;
        try {
          out =new PrintWriter(file);
          //生成页面
            //1 模板名称  2 context 3 输出流
            templateEngine.process("item",context,out);
        }catch (Exception e){
           e.printStackTrace();
        }finally {
            //关流
            try {
                out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }

    @Autowired
    private GoodsFeign goodsFeign;

    private Map<String, Object> getItemData(String spuId) {
         Map<String, Object> resultMap=new HashMap<>();
        //获取spu
        Spu spu = goodsFeign.findSpuById(spuId).getData();
        resultMap.put("spu",spu);
        //获取图片
        if (spu != null){
            if (StringUtils.isNotEmpty(spu.getImages())){
                resultMap.put("imageList",spu.getImages().split(","));
            }
        }
        //获取分类信息
        Category category1 = goodsFeign.findById(spu.getCategory1Id()).getData();
        resultMap.put("category1",category1);
        Category category2 = goodsFeign.findById(spu.getCategory2Id()).getData();
        resultMap.put("category2",category2);
        Category category3 = goodsFeign.findById(spu.getCategory3Id()).getData();
        resultMap.put("category3",category3);

        //获取sku
        List<Sku> skuList = goodsFeign.findSkuListBySpuId(spuId);
        resultMap.put("skuList",skuList);

        //商品的规格
        resultMap.put("specificationList", JSON.parseObject(spu.getSpecItems(),Map.class));
        return resultMap;
    }
}
